marantz pm94

reddish75 · 20th November 2009, 11:10 PM

hi, i've got a marantz pm94 with a burnt resistor which does not appear on the schematic, i'm guessing that its used to drop current/voltage to the led board as it connects to this, there is also a capacitor which connects from the original supply line (24vdc), so pre the burnt resistor, the capacitor also dosent appear on the schematic.

has anyone any idea's on a starting point for a replacement resistor, or if its not on the schematic can i just omit it?

thanks

chris

Iain McNeill · 21st November 2009, 01:33 AM

A couple of points. The resistor probably is on the schematic, it may be associated with a different functional block, but these days schematics drive parts lists.

Second is that you need to find out why the resistor burned out before you replace it.

Is everything else working OK? Just the display is out?

reddish75 · 21st November 2009, 08:37 AM

i'll look at the schematic again, but i dont think i'll find it as it was just soldered on the underside of the board.

20th November 2009, 11:10 PM	#1
reddish75 diyAudio Member Join Date: Aug 2006	marantz pm94 hi, i've got a marantz pm94 with a burnt resistor which does not appear on the schematic, i'm guessing that its used to drop current/voltage to the led board as it connects to this, there is also a capacitor which connects from the original supply line (24vdc), so pre the burnt resistor, the capacitor also dosent appear on the schematic. has anyone any idea's on a starting point for a replacement resistor, or if its not on the schematic can i just omit it? thanks chris

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21st November 2009, 01:33 AM	#2
Iain McNeill diyAudio Moderator Join Date: Oct 2007 Location: Santa Cruz, California	A couple of points. The resistor probably is on the schematic, it may be associated with a different functional block, but these days schematics drive parts lists. Second is that you need to find out why the resistor burned out before you replace it. Is everything else working OK? Just the display is out?

21st November 2009, 08:37 AM	#3
reddish75 diyAudio Member Join Date: Aug 2006	i'll look at the schematic again, but i dont think i'll find it as it was just soldered on the underside of the board.

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